Nixx- did you look at the links on springtails? Now that it's certain what they are, WG has made a good call; take this biologists word for it, springtails are no threat to the plants in any way; they eat fungus only, not plant tissues,...damp conditions are a must for them, so elevating your plants off the floor level, by several inches, say, on a milk crate or such with an open structure to prevent forming another damp zone will help a lot... they are everywhere in nature, in staggering numbers, so being utterly rid of them isn't likely for long; until you can undergo a complete clean and dry of the tent, get fresh soil, etc., you'll see some, and even then, they may come back.... meantime, creating a hostile environment and nailing the existing population will suppress their numbers... again, they aren't true pests, just a nuisance... DE can help, but it's messy (it's made of microscopic algae "skeletons", basically made of Sio2 -glass- ,or CaCO3, and is the equivalent of glass shards at their size scale; it kills by physical damage to their bodies)... they are easy to kill with safe products, though I don't know if mosquito dunks will work on them ( those are a biological weapon, a form of bacteria that gets ingested and ruins their guts,... a similar strain of bact. is used in that caterpillar spray), but fungus gnats are, and they're just as ubiquitous as springtails! So try those anyway, as a preventative, if nothing else... otherwise, keep making life hell for them with the above suggestions.... :ama: